EP4417853B1 - Kupplung für mehrwandige leitungen - Google Patents

Kupplung für mehrwandige leitungen

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Publication number
EP4417853B1
EP4417853B1 EP23305205.9A EP23305205A EP4417853B1 EP 4417853 B1 EP4417853 B1 EP 4417853B1 EP 23305205 A EP23305205 A EP 23305205A EP 4417853 B1 EP4417853 B1 EP 4417853B1
Authority
EP
European Patent Office
Prior art keywords
coupling
seal
female
coupling part
male
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP23305205.9A
Other languages
English (en)
French (fr)
Other versions
EP4417853C0 (de
EP4417853A1 (de
Inventor
Gerald GÜNZEL
Ralf Egerer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nexans SA
Original Assignee
Nexans SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nexans SA filed Critical Nexans SA
Priority to EP23305205.9A priority Critical patent/EP4417853B1/de
Priority to PL23305205.9T priority patent/PL4417853T3/pl
Priority to ES23305205T priority patent/ES3059840T3/es
Priority to CA3228202A priority patent/CA3228202A1/en
Priority to US18/435,858 priority patent/US12607286B2/en
Priority to AU2024200794A priority patent/AU2024200794A1/en
Priority to JP2024020142A priority patent/JP2024116099A/ja
Priority to KR1020240021341A priority patent/KR20240127304A/ko
Publication of EP4417853A1 publication Critical patent/EP4417853A1/de
Application granted granted Critical
Publication of EP4417853C0 publication Critical patent/EP4417853C0/de
Publication of EP4417853B1 publication Critical patent/EP4417853B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F16L39/005—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies for concentric pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/141—Arrangements for the insulation of pipes or pipe systems in which the temperature of the medium is below that of the ambient temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
    • F16L59/184—Flanged joints

Definitions

  • Multi-walled flexible lines include in particular vacuum-insulated lines but also lines in which the space between the walls or pipes of the lines is filled with air, an inert gas, or a medium for temperature control of the line.
  • Cryogenic media also known as cryogenic fluids
  • cryogenic fluids are often transported on ships, in tanker wagons or on tanker trucks.
  • Important examples include liquefied natural gas (LNG), which has an evaporating temperature of -162°C (111 K), liquid nitrogen with an evaporating temperature of -196°C (77 K), liquid hydrogen (evaporating temperature -253°C, 20 K) or liquid helium (evaporating temperature -269°C, 4 K).
  • LNG liquefied natural gas
  • the transfer from one tank to another during loading is typically accomplished with vacuum insulated lines and couplings.
  • the transfer lines are designed to be flexible and are provided at least at one end with a rigid so-called Johnston coupling, with which two cryogenic lines can be detachably connected without interrupting the thermal insulation at the connection point.
  • the transfer lines are coupled to tanks to be connected, subsequently rendered inert by purging, and cooled down to operation temperature. Before decoupling the transfer line is warmed up to ambient temperature and rendered inert. During the complete operation the couplings must be tight against the environment while the temperature of components of the coupling varies between ambient and cryogenic temperatures.
  • a Johnston coupling is disclosed, for example, in EP 1 957 851 B1 and is shown in Figure 1 .
  • a first seal 132 seals the two coupling halves against each other in the cold area.
  • a second seal 120 seals the two coupling halves against each other in the warm area. This creates a dead space between the two seals.
  • the second seal 120 primarily seals the two coupling halves against each other.
  • the first seal 132 provides the primary seal and the second seal 120 serves as a redundancy.
  • first seal 132 Since the first seal 132 only works properly when it is cold, the exact distance between the first and second seal is crucial for the correct operation of the first seal. Slight deviations due to manufacturing tolerances will result in permanent leakage of one or the other seal. Therefore, manufacturing tolerances are quite tight which increases the production costs.
  • the two seals 120, 132 create a dead space between the male coupling part and the female coupling part, in which a certain amount of cryogenic fluid is accumulated and captured during cooling because the seal 132 is not completely tight at the beginning of the cooling process.
  • the amount of captured cryogenic fluid cannot be completely removed from the dead space when the coupling is in its coupled state. Therefore, the captured cryogenic fluid enters the environment during uncoupling of the coupling parts. If the fluid is hazardous, e.g. inflammable, toxic etc., this will pollute the environment and imperil the operators of the transfer line.
  • US 7 399 002 B2 which discloses the preamble of claim 1 and US 6 533 334 B1 relate to a cryogenic seal for vacuum insulated pipe systems and discloses a female and male coupling part.
  • the outer tube of the male coupling part is connected with a bellow that permits contraction when the inner tube contracts when it cools down because of the flow of cryogenic fluid.
  • the inner tube 16 of the male coupling part is not provided with a bellow and the female coupling part is not provided with any bellow at all.
  • WO 2015/122 310 A1 discloses a connection structure for double wall vacuum insulated lines comprising corrugated inner and outer pipes.
  • the tubes of the male and female coupling parts are not corrugated and, thus, are not flexible in axial direction.
  • the connection between the two vacuum insulated lines is achieved by welding.
  • JP H10 231 970 A shows a coupling for double-walled vacuum insulated lines.
  • the coupling parts are provided with flanges that are screwed together.
  • the gasket is arranged between the flanges.
  • the coupling parts are rigid in an axial direction.
  • JP 707 7009 B2 describes a coupling for connecting two vacuum insulated lines.
  • Male and female coupling parts are releasably connected at their warm end with flange is sealed with an O-ring. At the cold and the male and female coupling parts are provided with an additional seal.
  • fluid is to be understood as any kind of flowable material that can have a solid, liquid, or gaseous state of aggregation.
  • fluids also include solid powders that can be pumped and flow through transfer lines like a liquid.
  • fluids also include aerosols and emulsions.
  • the described double-walled vacuum insulated line is taken only as an example for other types of multi-walled lines mentioned above.
  • Conventional couplings for multi-walled lines frequently have the problem that they are not gas tight when the coupling has not yet reached its operation temperature which entails the problems described above.
  • tube, pipe or line is to be understood as conduct with any kind of cross-sectional shape.
  • the present disclosure suggests a coupling for connecting a first and a second multi-walled line each one having at least two concentric pipes, which are separated by a space.
  • the coupling comprises a female coupling part comprising at least two concentric tubes including an inner and an outer tube, which are connectable at one end with one of the concentric pipes of the first multi-walled line. The other ends of the at least two concentric tubes are joined in a gas tight manner.
  • the inner tube is provided with a sealing surface.
  • the coupling further comprises a male coupling part comprising at least two concentric tubes including an inner and an outer tube, which are connectable at one end with one of the concentric pipes of the second multi-walled line.
  • the other ends of the at least two concentric tubes of the male coupling part are joined in a gas tight manner. All concentric tubes of the female and/or male coupling parts are compressible and/or expandable in an axial direction.
  • the proposed coupling When in the coupled state the proposed coupling generates a pressure force by which a fluid tight connection between the male and female coupling part is already achieved when the coupling has not yet reached its operation temperature. I.e. the coupling is already gas tight when for instance a transfer line for cryogenic fluids is still warm. Normally, the coupling becomes fluid and/or gas tight only after it has reached its operation temperature. As a result, lose manufacturing tolerances are acceptable because the tolerances are compensated by the amount of compression and/or expansion of the male and/or female coupling part. Due to the elastic compression and/or expansion of the male and/or female coupling parts the materials they are made from can be different and can have different coefficients of thermal expansion. Therefore, the materials of the coupling parts may be chosen to adapt the coupling to specific needs.
  • the at least two concentric tubes of the female and/or male coupling are corrugated. Corrugation is a convenient way to make the concentric tubes compressible and/or expandable in an axial direction of the tubes.
  • the coupling comprises a seal that is arranged between the sealing surface of the female coupling part and a front end of the male coupling part.
  • the seal can be made from e.g. metal, polymer or rubber.
  • the female and/or male coupling parts being compressible and/or expandable ensure that the seal receives a sufficient axial pressure to make it fluid tight even when the coupling has not yet reached its operation temperature and in the presence of significant manufacturing tolerances.
  • the seal is attached to the female or male coupling part.
  • the sealing surface is angled relative to the axial direction of the inner tube.
  • the sealing surface can take the form of a step but other shapes such as e.g. bevel, fillet, etc. are also technically possible.
  • the sealing surface, step, seal, etc. do not have to have a circular cross-section. Oval, polygonal or any cross-sectional shapes are also technically conceivable.
  • the female and male coupling parts comprise a flange.
  • the flanges serve as mechanical means to firmly connect the male and female coupling part.
  • a seal is arranged between the flanges.
  • the seal is in the warm part of the coupling and is a backup or redundancy for the seal in the cold part of the coupling. Due to the corrugation the length of the thermal path is increased. This improves the thermal insulation of the coupling simply because the thermal resistance between the seal between the sealing surface and a front face of the male coupling part and the seal between the flanges is increased. Consequently, the length of the coupling required to achieve a given level of thermal insulation may be shorter if the concentric tubes are corrugated than if they are not.
  • the sealing surface of the female coupling part is provided with a collar.
  • the collar serves as a convenient holding means for a seal in the cold part of the coupling.
  • the collar can accommodate a tubular seal on its inner or outer perimeter.
  • the tubular seal can be ring-shaped.
  • the tubular seal has a larger or smaller coefficient of thermal expansion than the collar.
  • cold fluid such as a cryogenic fluid streams through the coupling the seal shrinks more or less than the collar.
  • the tubular seal is fitted on the outer or inner perimeter of the collar an additional frictional connection between the collar and the seal is realized.
  • the space between the at least two concentric pipes of the first and/or second multi-walled line is evacuated, filled with air, or inert gas or with a medium for temperature control of the inner pipe.
  • the distance between the front end of the male coupling part and a contact surface of the associated connection flange is larger than the distance between the surface of the sealing surface of the female coupling part and a contact surface of the associated connection flange. Due to this arrangement the seal arranged between the sealing surface of the female coupling part and the front end of the male coupling part are always compressed even when manufacturing tolerances are present that exceed thermal expansion or shrinking of the coupling when the temperature of the coupling varies during the operation of the coupling.
  • the present disclosure suggests a transfer device for cryogenic fluids comprising a coupling according to the first aspect of the present disclosure.
  • FIG. 2A shows a first embodiment of a coupling 200 according to the present disclosure.
  • the coupling 200 comprises a male coupling part 201 and a female coupling part 202.
  • the male coupling part 201 is connected with a first vacuum insulated transfer line 203.
  • the female coupling part 202 is attached to a second vacuum insulated transfer line 204.
  • the transfer lines 203, 204 have an inner pipe 206 and an outer pipe 207. Between the inner and outer pipes 206, 207 there is an evacuated space 208 for insulation purposes.
  • the male coupling part 201 comprises an inner tube 210 and an outer tube 211, which are separated by a space 212.
  • the inner and outer tubes 210, 211 are corrugated in a section S with the length s1.
  • the corrugated section S gives flexibility to the male coupling part 201 in an axial direction indicated in Figure 2A with a double arrow 213. More specifically, the male coupling part 201 is compressible and expandable in the directions of double arrow 213.
  • the inner tube 210 of the male coupling part 201 is connected with the inner pipe 206 of the first transfer line 203.
  • the outer tube 211 is connected with a flange 214 on a contact surface 215 of the flange 214.
  • the outer pipe 207 of the first transfer line 203 is connected with an opposite side of the flange 214 in a vacuum tight fashion.
  • the space 212 communicates with evacuated space 208 of the first transfer line 203.
  • vacuum insulation between the inner and outer tube 210, 211 of the male coupling part 201 is achieved.
  • Opposite to the flange 214 the inner and outer tubes 210, 211 are joined in a vacuum tight manner to form a front face 216 of the male coupling part 201.
  • a length Lm of the male coupling part 201 is defined as the distance between the front face 216 and the contact surface 215 of the flange 214.
  • the female coupling part 202 comprises an inner tube 217 and an outer tube 218. Ends of the inner and outer tubes 217, 218 are connected with a flange 219. Opposite ends of the inner and outer tubes 217, 218 are connected with the inner and outer pipes 206, 207, respectively, of the second transfer line 204.
  • the inner tube 217 forms a circular step 221 which bridges a difference between a diameter of the inner tube 217 to a smaller diameter of the inner pipe 206.
  • the circular step 221 is an integral part of the inner tube 217. In other embodiments the circular step 221 is formed by a ring welded to the inner tube 217. A skilled person may conceive further ways how to create the circular step 221.
  • the seal 222 has a diameter that essentially corresponds to the diameter of the front face 216 of the male coupling part 201.
  • the seal 222 is made for instance from metal, polymer, or rubber.
  • the flange 219 carries a circular seal 223.
  • a length Lf of the female coupling part 202 is defined as the distance between the circular step 221 and a contact surface 224 of the flange 219.
  • the length Lf of the female coupling part 202 is for instance 1 to 3 mm shorter than the length Lm of the male coupling part 201.
  • the thickness of the seals 222 and 223 is neglected because it will lead only to a certain additional compression of the male coupling part 201.
  • the step 221 functions as a sealing surface for the seal 222.
  • the sealing surface does not necessarily have to be a step.
  • Other shapes such as bevel, fillet, etc. are also technically possible.
  • the sealing surface, step, seal, etc. do not have to have a circular cross-section. Oval, polygonal and similar cross-sections are also technically conceivable.
  • the male coupling part 201 is inserted into the female coupling part 202.
  • Figure 2B shows the coupling 200 in its connected state. In the connected state the flanges 214 and 219 are tightly connected with screws or clamps (not shown in Figure 2B ). Since Lf ⁇ Lm the corrugated section S is compressed to a length s2 ⁇ s1 when the contact surfaces 215, 224 of the flanges 214, 219 are in direct contact. Due to the compression of the corrugated section S the seal 222 is compressed already in a warm state of the coupling 200. As a result, the seal 222 is fluid tight already when the coupling 200 is coupled even before it is cooled down to the operational temperature of the coupling 200.
  • the difference of 1 to 3 mm between the length Lf of the female coupling part 202 and the length Lm of the male coupling part 201 is normally sufficient to compensate even lose manufacturing tolerances for the male and female coupling part 201, 202, respectively.
  • the length difference between the male and female coupling parts can be chosen smaller or larger than 1 to 3 mm in case of need and depending on a specific application.
  • the seal 222 Due to the compression of the male coupling part 201 the seal 222 is fluid tight in all operating states. Therefore, the seal 222 could be omitted but when present, it serves as a backup in case the seal 222 fails for any reason.
  • the seal 222 is at the cold area of the coupling 200 while the seal 223 is in the warm area of the coupling 200.
  • the seal 222 is attached to the front face 216 of the male coupling part 201 without altering the functionality of the coupling 200.
  • the transfer lines 203, 204 are flexible transfer lines with corrugated inner and outer pipes 206, 207.
  • the pipes 206, 207 are shown only schematically in the figures without exhibiting the corrugation.
  • Figure 3A illustrates a modified embodiment of the coupling 200.
  • the circular step 221 is provided with a collar 301.
  • the collar 301 is a sort of continuation of the inner pipe 206 of the transfer line 204.
  • a cylindrical seal 302 has an inner diameter corresponding to the outer diameter of the collar 301 and is fitted on the collar 301.
  • the length of the cylindrical seal 302 is c.
  • the length Lm of the male coupling part 201, the length Lf of the female coupling part 202 and the length c of the seal 302 are selected such that Lf ⁇ c + Lm in an uncoupled state of the coupling 200. I.e.
  • the corrugated section S when the coupling 200 is coupled such that the contact surfaces 215, 224 of the flanges 214, 219 are in direct contact the corrugated section S is compressed and exerts a pressure on the cylindrical seal 302 such that the inner pipes 206 of the transfer lines are connected in a leak tight fashion. This prevents any fluid flowing through the inner pipes 206 from entering in the space between the seals 302 and 223.
  • the seal 302 is made of a material with the higher coefficient of thermal expansion than the collar 301. When the seal 302 cools down when it comes into contact with cryogenic fluid flowing in the inner pipes 206, the seal 302 radially shrinks more than the adjacent collar 301 and an additional frictional connection between the collar 301 and the seal 302 is produced. Again, the thickness of the seal 223 is neglected in this reasoning.
  • Figure 3B exhibits a further modified embodiment of the coupling 200.
  • the collar 301 on the circular step 221 has a diameter which is larger than the diameter of the inner pipe 206 but smaller than the diameter of the inner tube 217.
  • the outer diameter of the cylindrical seal 302 corresponds to the inner diameter of the collar 301 such that the seal 302 fits into the collar 301.
  • the seal 302 has a lower coefficient of thermal expansion than the collar 301. On cooling, the seal 302 shrinks less than the adjacent collar 301 and a frictional connection is produced.
  • the coupling 200 shown in Figure 3B functions in the same way as the coupling 200 of Figure 3A .
  • the inner diameter of the seal 302 corresponds to the outer diameter of the collar 301.
  • the seal 302 as a coefficient of thermal expansion which is larger than the coefficient of thermal expansion of the collar. In this way, when the coupling is cooled by cryogenic fluid than the seal 302 shrinks more than the adjacent collar 301 like it has been described in connection with Figure 3A .
  • the collar 301 is attached to the male coupling part 201.
  • Figure 4 displays a further embodiment of a coupling 400.
  • the inner and outer tube 217, 218 are corrugated in a section S.
  • the relative length of the male and female coupling parts 201, 202 are the same as it has been described with reference to Figure 2A .
  • the only difference between the embodiments shown in Figures 4 and 2A is that the female coupling part 202 is elastically expanded or elongated for generating the force exerted on the seal 222 by the front face 216 of the male coupling part 201.
  • the seal 22 is already leak tight from the very beginning when the coupling 400 is brought into the coupled state and prevents any fluid flowing through the inner pipes 206 from entering in the space between the seals 222 and 223.
  • the inner and outer tubes 210,211,217,218 of both the male and female coupling parts 201, 202 are corrugated.
  • the length difference between the male and female coupling parts Lm and Lf, respectively are compensated be a compression of the male coupling part 201, expansion of the female coupling part 202 or a combination of both.
  • the seal 222 and 302, respectively, on the cold side of the coupling is already leak tight before it has been cooled down to its operational temperature. This effect is achieved by the compression and/or expansion of the male and female coupling parts 201 and 202, respectively.
  • a single unit or device may perform the functions of multiple elements recited in the claims.
  • the fact that individual functions and elements are recited in different dependent claims does not mean that a combination of those functions and elements could not advantageously be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Thermal Insulation (AREA)
  • Joints Allowing Movement (AREA)

Claims (13)

  1. Kupplung zum Verbinden einer ersten und einer zweiten mehrwandigen Leitung (203, 204), wobei eine jede zumindest zwei konzentrische Leitungsrohre (206, 207) aufweist, die durch einen Zwischenraum (208) getrennt sind, wobei die Kupplung umfasst:
    - ein weibliches Kupplungsteil (202) umfassend zumindest zwei konzentrische Rohre mit einem Innen- und einem Außenrohr (217, 218), welche an einem Ende mit einem der konzentrischen Leitungsrohre (206, 207) der ersten mehrwandigen Leitung (204) verbindbar sind, wobei die anderen Enden der zumindest zwei konzentrischen Rohre (217, 218) auf fluiddichte Weise verbunden sind, wobei das Innenrohr (217) mit einer Abdichtfläche (221) versehen ist;
    - ein männliches Kupplungsteil (201) umfassend zumindest zwei konzentrische Rohre mit einem Innen- und einem Außenrohr (210, 211), die an einem Ende mit einem der konzentrischen Leitungsrohre (206, 207) der zweiten mehrwandigen Leitung (203) verbindbar sind, wobei die anderen Enden der zumindest zwei konzentrischen Rohre (210, 211) auf fluiddichte Weise verbunden sind;
    dadurch gekennzeichnet, dass
    alle konzentrischen Rohre der weiblichen und/oder der männlichen Kupplungsteile in axialer Richtung komprimierbar und/oder expandierbar sind.
  2. Kupplung nach Anspruch 1, wobei die zumindest zwei konzentrischen Rohre des weiblichen und/oder des männlichen Kupplungsteils (201, 202) gewellt sind.
  3. Kupplung nach Anspruch 1 oder 2, wobei die Kupplung (200) eine Dichtung (222) umfasst, die zwischen der Abdichtfläche (221) des weiblichen Kupplungsteils (202) und einem vorderen Ende (216) des männlichen Kupplungsteils (201) angeordnet ist.
  4. Kupplung nach Anspruch 3, wobei die Dichtung (222) an dem weiblichen oder an dem männlichen Kupplungsteil (201, 202) angebracht ist.
  5. Kupplung nach den Ansprüchen 1 bis 4, wobei die Abdichtfläche (221) in Bezug auf die axiale Richtung des Innenrohrs (217) winkelig angeordnet ist.
  6. Kupplung nach einem der vorhergehenden Ansprüche, wobei die weiblichen und die männlichen Kupplungsteile (201, 202) jeweils einen Flansch (214, 219) umfassen.
  7. Kupplung nach Anspruch 6, wobei zwischen den Flanschen (214. 219) eine Dichtung (223) angeordnet ist.
  8. Kupplung nach einem der vorhergehenden Ansprüche, wobei die Abdichtfläche (221) des weiblichen Kupplungsteils (202) mit einem Kragen (301) versehen ist.
  9. Kupplung nach Anspruch 8, wobei der Kragen (301) an seinem Innen- oder Außenumfang eine rohrförmige und/oder konische Dichtung (302) aufnimmt.
  10. Kupplung nach Anspruch 9, wobei die rohrförmige Dichtung (302) einen größeren oder einen kleineren Wärmeausdehnungskoeffizienten als der Kragen (301) aufweist.
  11. Kupplung nach einem der vorhergehenden Ansprüche, wobei der Zwischenraum (208) zwischen den zumindest zwei konzentrischen Leitungsrohren (206, 207) der ersten und/oder der zweiten mehrwandigen Leitung unter Vakuum gesetzt ist, oder mit Luft, Inertgas oder einem Medium zur Temperaturregelung des inneren Leitungsrohrs (206) gefüllt ist.
  12. Kupplung nach einem der Ansprüche 3 bis 11, wobei der Abstand (Lm) zwischen dem vorderen Ende (216) des männlichen Kupplungsteils (201) und einer Kontaktfläche (215) des zugehörigen Verbindungsflanschs (214) größer ist als der Abstand zwischen der Oberfläche der Abdichtfläche (221) des weiblichen Kupplungsteils (202) und einer Kontaktfläche (224) des zugehörigen Verbindungsflansches (219).
  13. Übertragungsvorrichtung für kryogene Fluide umfassend eine Kupplung nach einem der vorhergehenden Ansprüche.
EP23305205.9A 2023-02-15 2023-02-15 Kupplung für mehrwandige leitungen Active EP4417853B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP23305205.9A EP4417853B1 (de) 2023-02-15 2023-02-15 Kupplung für mehrwandige leitungen
PL23305205.9T PL4417853T3 (pl) 2023-02-15 2023-02-15 Złączka do wielościennych przewodów
ES23305205T ES3059840T3 (en) 2023-02-15 2023-02-15 Coupling for multi-walled lines
CA3228202A CA3228202A1 (en) 2023-02-15 2024-02-05 Coupling for multi-walled lines
US18/435,858 US12607286B2 (en) 2023-02-15 2024-02-07 Coupling for multi-walled lines
AU2024200794A AU2024200794A1 (en) 2023-02-15 2024-02-08 Coupling for multi-walled lines
JP2024020142A JP2024116099A (ja) 2023-02-15 2024-02-14 多層ライン用カプリング
KR1020240021341A KR20240127304A (ko) 2023-02-15 2024-02-14 다중벽 라인용 커플링

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23305205.9A EP4417853B1 (de) 2023-02-15 2023-02-15 Kupplung für mehrwandige leitungen

Publications (3)

Publication Number Publication Date
EP4417853A1 EP4417853A1 (de) 2024-08-21
EP4417853C0 EP4417853C0 (de) 2025-10-29
EP4417853B1 true EP4417853B1 (de) 2025-10-29

Family

ID=85328921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23305205.9A Active EP4417853B1 (de) 2023-02-15 2023-02-15 Kupplung für mehrwandige leitungen

Country Status (8)

Country Link
US (1) US12607286B2 (de)
EP (1) EP4417853B1 (de)
JP (1) JP2024116099A (de)
KR (1) KR20240127304A (de)
AU (1) AU2024200794A1 (de)
CA (1) CA3228202A1 (de)
ES (1) ES3059840T3 (de)
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JPH10231970A (ja) * 1997-02-21 1998-09-02 Mitsubishi Heavy Ind Ltd 真空断熱配管継手
US6533334B1 (en) * 1999-10-13 2003-03-18 Chart Inc. Vacuum-jacketed bayonet pipe spool and pipe spool system for cryogenic fluid
EP1619436A3 (de) * 2004-07-20 2007-05-02 Chart Industries, Inc. Tieftemperaturdichtung für ein vakuumisoliertes Rohr
DE102005059089A1 (de) 2005-12-10 2007-06-14 Nexans Steckkupplung für Kryoleitungen
JPWO2015122310A1 (ja) * 2014-02-12 2017-03-30 古河電気工業株式会社 真空断熱管の接続構造
EP3339713B1 (de) * 2016-12-23 2019-10-16 Nexans Steckkupplung fuer kryoleitungen

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EP4417853C0 (de) 2025-10-29
CA3228202A1 (en) 2025-04-29
AU2024200794A1 (en) 2024-08-29
JP2024116099A (ja) 2024-08-27
US12607286B2 (en) 2026-04-21
EP4417853A1 (de) 2024-08-21
US20240271736A1 (en) 2024-08-15
ES3059840T3 (en) 2026-03-24
PL4417853T3 (pl) 2026-03-16

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